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  <meta name="keywords" content="createRouteManager,addScaleBar,addDirectionsRenderer,makeRouteRequest,onRouteCalculated"/>
  <title>HERE Maps API Example: Directions using Imperial Measurements</title>
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    data-libs="directions-renderer"
    data-parent="demos/directions-rendering-component/">
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  <h1>Calculating a route using Imperial Measurements</h1>
  <p style="width:540px;" >This example uses the routing manager to calculate a route between London and Brighton, displaying directions in miles and yards. The directions instructions are written to the right of the map.
  </p>
  <div id="mapContainer" style="width:540px; height:334px;float:left" class="no-expand"></div>
  <div id="directions" style="float:left; color: rgb(102, 102, 102); height:334px;overflow:auto; max-width: 500px;"></div>
  <div id="src" style="clear:both;width:100%" ><br/>
      <p>The control can be loaded using the following <code>&lt;script&gt;</code> element:
      <pre><code class="prettyprint">&lt;script type="text/javascript" charset="UTF-8" src="<a href="libs/directions-renderer.js">libs/directions-renderer.js</a>"&gt;&lt;/script></code></pre>
    <p>Code:</p>
  </div>
<script id="example-code" data-categories="routing,library" type="text/javascript" >
//<![CDATA[
var map,
  infoBubbles, 
  directionsRenderer,
  router;

function onRouteCalculated (observedRouter, key, value) {
  if (value === 'finished') {
    var routes = observedRouter.getRoutes(),

    //create the default map representation of a route
      mapRoute =
        new nokia.maps.routing.component.RouteResultSet(
          routes[0]
        ).container; //first option found
    map.objects.add(mapRoute);
    directionsRenderer.set('route', routes[0]);

    //Zoom to the bounding box of the route
    map.zoomTo(mapRoute.getBoundingBox(), false, 'default');
  } else if (value === 'failed') {
    alert('The routing request failed.');
  }
}

function makeRouteRequest() {
  var waypoints = new nokia.maps.routing.WaypointParameterList(),
    modes = [{
      type: 'fastest',
      transportModes: ['car'],
      options: 'avoidTollroad',
      trafficMode: 'default'
    }];

  waypoints.addCoordinate(
    new nokia.maps.geo.Coordinate(51.5072, -0.1275)
  ); // London, England
  waypoints.addCoordinate(
    new nokia.maps.geo.Coordinate(50.8429, -0.1313)
  );  // Brighton, England

  
  router.calculateRoute(waypoints, modes);
}

function addDirectionsRenderer(map) {
  directionsRenderer = new DirectionsRenderer(document.getElementById('directions'));
  map.addComponent(directionsRenderer);
}

function addScaleBar(map) {
  var scaleBar = new nokia.maps.map.component.ScaleBar();
  map.addComponent(scaleBar);
  // Set to Imperial Measurements
  scaleBar.set("showImperialUnits", true);
}

function createRouteManager() {
  router = new nokia.maps.routing.Manager();
  router.addObserver('state', onRouteCalculated);
  // Set to Imperial Measurements
  router.set('metricSystem', 'imperial');
}

function afterHereMapLoad(theMap) {
  map = theMap;
  infoBubbles = new nokia.maps.map.component.InfoBubbles();
  infoBubbles.options.defaultWidth = 200;
  infoBubbles.options.width = 200;
  map.addComponent(infoBubbles);

  createRouteManager();
  addDirectionsRenderer(map);
  addScaleBar(map);
  makeRouteRequest();
}
//]]>
</script>
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